论文标题
Terahertz振动分子时钟，具有系统的不确定性为$ 10^{ - 14} $ Level
A terahertz vibrational molecular clock with systematic uncertainty at the $10^{-14}$ level
论文作者
论文摘要
光学晶格中的中性量子吸收器已成为具有精美光谱分辨率的时钟的领先平台。但是，到目前为止，对这些时钟及其系统转变的研究仅限于原子。在这里，我们将这种体系结构扩展到双原子分子的集合，并在实验上实现基于纯分子振动的精确晶格时钟。我们评估了领先的系统学，包括非线性陷阱诱导的光转换的表征，达到了$ 4.6 \ times10^{ - 14} $的总系统不确定性。测量振动分裂的绝对频率为31 825 183 207 592.8（5.1）Hz，使我们的分子的分离能以记录精度确定。我们的结果代表了分子光谱和THZ频率标准的重要里程碑，并且可以推广到其他中性分子物种，其适用于基本物理学，包括分子量子电动力学的测试和寻找新相互作用。
Neutral quantum absorbers in optical lattices have emerged as a leading platform for achieving clocks with exquisite spectroscopic resolution. However, the studies of these clocks and their systematic shifts have so far been limited to atoms. Here, we extend this architecture to an ensemble of diatomic molecules and experimentally realize an accurate lattice clock based on pure molecular vibration. We evaluate the leading systematics, including the characterization of nonlinear trap-induced light shifts, achieving a total systematic uncertainty of $4.6\times10^{-14}$. The absolute frequency of the vibrational splitting is measured to be 31 825 183 207 592.8(5.1) Hz, enabling the dissociation energy of our molecule to be determined with record accuracy. Our results represent an important milestone in molecular spectroscopy and THz-frequency standards, and may be generalized to other neutral molecular species with applications for fundamental physics, including tests of molecular quantum electrodynamics and the search for new interactions.
